After reviewing the 300 list, Thought I’d ask if there is a program out
there for reprogramming factory settings for shift points and fuel
efficiency/airmixture settings. IF this exists can it be loaded on a laptop
and what hardware/software is needed.
I take it you have an X300 with a V12? If so, yes, you can change it.
The transmission is a good old GM 4L80-E (same as the TH400/3L80 but
with an overdrive gear and electronic control). You can buy a program
to change all the shift points, firmness, etc. from a bunch of
sources, including Jet (www.jetchip.com ; NAYYY). Hook up your laptop
and you can change everything.
If you have an older tranny (TH400) you need to put in a shift kit
and/or have a tranny shop readjust the shift points and firmness. Of
coures my tranny was shifting very firm for a few weeks… now it’s
dead. Oops. Then again it also had 130,000 miles and 20 years on it.
Time for the 5-speed!–
-Ted
'82 XJ-S – 5.3L V12 '98 Volvo S70 GLT – 2.4L I5 Turbo
'93 GMC Vandura 2500 – 4.3L V6
New York City, NY AIM: FordCrusherGT Yahoo: Jag_Pushrod
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